Made a Kumihimo disk last night.Just found this technique and I love it!I made a template to share.I ran 4 pieces of fun foam through my zyron machine then stuck them together,I tried craft glue but it wouldn't stick I think you can get fun foam with adhesive already on it or thick fun foam at Micheals,but I couldn't wait to go to the store so I improvised

here is the template.I printed mine at 5in diameter,glue this to the top of the foam